<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRoleDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>

      <el-table :data="roleList" style="width: 100%" border stripe>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom',index1 === 0 ? 'bdtop':'','vcenter']" v-for="(item1,index1) in scope.row.children" :key="item1.id">
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <el-row :class="[index2 === 0 ? '':'bdtop','vcenter']" v-for="(item2,index2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag closable type="success" @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag closable type="warning" v-for="(item3) in item2.children" :key="item3.id" @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column label="序号" type="index" width="50px"></el-table-column>
        <el-table-column label="角色ID" prop="id"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditRoleDialog(scope.row.id)">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="deleteRole(scope.row.id)">删除</el-button>
            <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <el-dialog title="添加角色" :visible.sync="addRoleDialogVisible" width="50%" @close="addRoleDialogClosed">
      <el-form ref="addRoleFormRef" :model="addRoleForm" label-width="80px" :rules="addRoleFormRules">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addRoleForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>

    <el-dialog title="修改角色" :visible.sync="editRoleDialogVisible" width="50%" @close="editRoleDialogClosed">
      <el-form ref="editRoleFormRef" :model="editRoleForm" label-width="80px" :rules="editRoleFormRules">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editRoleForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRole">确 定</el-button>
      </span>
    </el-dialog>

    <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
      <el-tree :data="rightList" :props="rightTreeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="treeDefKeys" ref="rightTreeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="setRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      roleList: [],
      addRoleDialogVisible: false,
      addRoleForm: {
        roleName: '',
        roleDesc: ''
      },
      addRoleFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ]
      },
      editRoleDialogVisible: false,
      editRoleForm: {},
      editRoleFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ]
      },
      setRightDialogVisible: false,
      rightList: [],
      rightTreeProps: {
        children: 'children',
        label: 'authName'
      },
      treeDefKeys: [],
      roleId: ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.roleList = res.data
    },
    addRoleDialogClosed() {
      this.$refs.addRoleFormRef.resetFields()
    },
    addRole() {
      this.$refs.addRoleFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('roles', this.addRoleForm)
        if (res.meta.status !== 201) {
          this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
        this.addRoleDialogVisible = false
        this.getRolesList()
      })
    },
    async showEditRoleDialog(id) {
      this.editRoleDialogVisible = true
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      }
      this.editRoleForm = res.data
    },
    editRoleDialogClosed() {
      this.$refs.editRoleFormRef.resetFields()
    },
    editRole() {
      this.$refs.editRoleFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('roles/' + this.editRoleForm.roleId, {
          roleName: this.editRoleForm.roleName,
          roleDesc: this.editRoleForm.roleDesc
        })
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success('修改角色权限成功')
        this.editRoleDialogVisible = false
        this.getRolesList()
      })
    },
    async deleteRole(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.$message.success(res.meta.msg)
      this.getRolesList()
    },
    async removeRightById(role, rightId) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.$message.success(res.meta.msg)
      role.children = res.data
    },
    async showSetRightDialog(role) {
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.rightList = res.data
      this.roleId = role.id
      this.getTreeKeys(role, this.treeDefKeys)
      this.setRightDialogVisible = true
    },
    getTreeKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getTreeKeys(item, arr)
      })
    },
    setRightDialogClosed() {
      this.treeDefKeys = []
    },
    async setRights() {
      const keys = [
        ...this.$refs.rightTreeRef.getCheckedKeys(),
        ...this.$refs.rightTreeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.$message.success(res.meta.msg)
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
  .el-tag {
    margin: 7px;
  }

  .bdtop {
    border-top: 1px solid #eee;
  }

  .bdbottom {
    border-bottom: 1px solid #eee;
  }

  .vcenter {
    display: flex;
    align-items: center;
  }
</style>
